<template>
  <div class="count">
    <h1>我的名字是{{ name }}，我的位子是{{ address }}</h1>
    <h1>当前求和为:{{ sum }}</h1>
    <h1>当前求和后的10倍为:{{ largeSum }}</h1>
    <h1 style="color: red">Person组件的人数为:{{ persons.length }}</h1>
    <select v-model.number="n">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
      <option value="4">4</option>
    </select>
    <button @click="increment(n)">+</button>
    <button @click="decrement(n)">-</button>
    <button @click="jiaOdd(n)">当前求和为奇数再加</button>
    <button @click="jiaWait(n)">等一等再加</button>
  </div>
</template>

<script>
import { mapState, mapGetters, mapMutations, mapActions } from "vuex";
export default {
  name: "Count",
  data() {
    return {
      n: 1, //用户选择的数字
    };
  },
  computed: {
    //借助mapState生成计算属性,从state中读取数据 (对象写法)
    // ...mapState({ sum: "sum", name: "name", address: "address" }),

    //借助mapState生成计算属性,从state中读取数据 (数组写法)
    ...mapState(["sum", "name", "address", "persons"]),
    //这种写法要求取出来的属性名，和state中存的数据名是一样的

    /****** *******************************************   ***** */
    /* largeSum() {
      return this.$store.getters.largeSum;
    }, */
    // ...mapGetters({ largeSum: "largeSum" }), 对象写法

    ...mapGetters(["largeSum"]), //数组写法
  },

  methods: {
    /* increment() {
      this.$store.commit("JIA", this.n);
    },
    decrement() {
      this.$store.commit("JIAN", this.n);
    }, */

    //借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(对象写法)
    ...mapMutations({ increment: "JIA", decrement: "JIAN" }),
    //借助mapMutations生成对应的方法，方法中会调用commit去联系mutations(数组写法)
    // ...mapMutations(['JIA','JIAN']),

    /******************************************************/

    /* incrementOdd() {
      this.$store.dispatch("jiaOdd", this.n);
    },
    incrementWait() {
      this.$store.dispatch("jiaWait", this.n);
    }, */

    //借助mapMutations生成对应的方法，方法中会调用dispatch去联系actions(对象写法)
    // ...mapActions({ incrementOdd: "jiaOdd", incrementWait: "jiaWait" }),

    //借助mapMutations生成对应的方法，方法中会调用dispatch去联系actions(数组写法)
    ...mapActions(["jiaOdd", "jiaWait"]),
  },
};
</script>
<style>
button {
  margin-left: 5px;
}
</style>